AUTONOMOUS SAMPLER OF BOTTOM WATER Russian patent published in 2009 - IPC G01N1/10 

FIELD: instrument making.

SUBSTANCE: invention is related to autonomous sampler of bottom water. Autonomous sampler comprises stem with float fixed on its upper end, ballast chamber, installed in medium part of stem and arranged in the form of conic bottom inverted by top to the side of float, and side surface with traction rods. Sampler is equipped with compression spring installed with the possibility of interaction with support ring fixed on stem, and tight vessel for water sampling. Sampler comprises washer installed above support ring with the possibility of displacement along stem, between which and support ring there is a compression spring. It also comprises cams installed with the possibility of rotation in vertical plane, fixed tangentially to stem section and having mouth on side surface and protrusion in lower parts. Cams interact by their protrusions with washer, which is spring-loaded relative to stem and is arranged in the form of diaphragm with openings and support plate fixed by braces with gap in between. Sampler is equipped with stands fixed on stem and installed in diaphragm openings with shelf fixed on their lower ends, which is installed between diaphragm and plate, and plug for vessel, installed on shelf, which is fixed on lower plane of diaphragm. At the same time ballast chamber is installed with the possibility of displacement along stem, and its side surface is arranged in the form of sectors hingedly installed on large base of conical bottom. Traction rods of ballast chamber are arranged in the form of flexible links fixed on sectors and having ring on free end.

EFFECT: by means of flexible links, chamber is freely suspended in mouth of cams, with the possibility of disconnection in extreme lower position of cams in position of chamber unloading from ballast.

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